WanaKana Rust

ワナカナ <--> WanaKana <--> わなかな

[dependencies]
wana_kana = "4.0"

Utility library for checking and converting between Japanese characters - Hiragana, Katakana - and Romaji (Ported from https://github.com/WaniKani/WanaKana V4.0.2)

Examples

 use wana_kana::to_romaji::*;
 use wana_kana::to_kana::*;
 use wana_kana::to_hiragana::*;
 use wana_kana::Options;
 assert_eq!(to_romaji("ワナカナ"), "wanakana");
 assert_eq!(to_hiragana("WanaKana"), "わなかな");
 assert_eq!(to_kana("WANAKANA"), "ワナカナ");

Tests

Performance

On Migrating to 2.0 some performance improvements have been implemented by using more efficient lookup structures and avoiding allocations. According to these results around 1000 words can be converted per millisecond on a Core i7-6700.

 bench_hiragana_to_romaji    3,519            1,070              -2,449  -69.59%   x 3.29
 bench_kana_1                3,066            567                -2,499  -81.51%   x 5.41
 bench_kana_2                8,006            1,831              -6,175  -77.13%   x 4.37
 bench_katakana_to_hiragana  2,512            622                -1,890  -75.24%   x 4.04
 bench_katakana_to_katakana  1,664            629                -1,035  -62.20%   x 2.65
 bench_katakana_to_romaji    6,922            1,067              -5,855  -84.59%   x 6.49
 bench_romaji_to_hiragana    3,802            1,300              -2,502  -65.81%   x 2.92
 bench_romaji_to_katakana    4,361            1,929              -2,432  -55.77%   x 2.26

Comparison To WanaKana

A detailed analysis has been done in the bench_compare subfolder, the analysis below may be inaccurate.

A short comparison suggests around 25x performance

import toKana from './src/toKana';
import toHiragana from './src/toHiragana';
import toKatakana from './src/toKatakana';
import toRomaji from './src/toRomaji';

console.time("yo")
for (var i = 0; i < 1000; i++) {
    toKana('aiueosashisusesonaninunenokakikukeko')
    toKana('AIUEOSASHISUSESONANINUNENOKAKIKUKEKO')
    toHiragana('aiueosashisusesonaninunenokakikukeko')
    toHiragana('アイウエオサシスセソナニヌネノカキクケコ')
    toKatakana('aiueosashisusesonaninunenokakikukeko')
    toKatakana('あいうえおさしすせそなにぬねのかきくけこ')
    toRomaji('あいうえおさしすせそなにぬねのかきくけこ')
    toRomaji('アイウエオサシスセソナニヌネノカキクケコ')
}

console.timeEnd("yo")

node -r esm run.js

extern crate wana_kana;
use wana_kana::to_hiragana::to_hiragana;
use wana_kana::to_katakana::to_katakana;
use wana_kana::to_romaji::to_romaji;
use wana_kana::to_kana::*;

fn main() {
    let start = std::time::Instant::now();
    for _ in 0..1000 {
        to_kana("aiueosashisusesonaninunenokakikukeko");
        to_kana("AIUEOSASHISUSESONANINUNENOKAKIKUKEKO");
        to_hiragana("aiueosashisusesonaninunenokakikukeko");
        to_hiragana("アイウエオサシスセソナニヌネノカキクケコ");
        to_katakana("aiueosashisusesonaninunenokakikukeko");
        to_katakana("あいうえおさしすせそなにぬねのかきくけこ");
        to_romaji("あいうえおさしすせそなにぬねのかきくけこ");
        to_romaji("アイウエオサシスセソナニヌネノカキクケコ");
    }

    println!("{:?}", start.elapsed().as_millis());
}

node -r esm run.js 253.231ms

cargo run --release --bin bench 9ms

CLI

Convert to kana and back for fun and profit

cargo install wana_kana will install 2 CLI tools: to_kana and to_romaji.

Both commands support piping ls | to_kana and parameters to_romaji へろ　をるど.